Dihang-Dibang or Dehang-Debang is a biosphere reserve constituted in 1998. It is in the Indian state of Arunachal Pradesh. The Mouling National Park and the Dibang Wildlife Sanctuary are located fully or partly within this biosphere reserve. The reserve spreads over three districts: Dibang Valley, Upper Siang, and West Siang. It covers high mountains of Eastern Himalaya and Mishmi Hills. The elevation in the reserve ranges up to more than 5,000 metres (16,000 ft) above sea level. An important fact relating to this Biosphere reserve is that it has natural vegetation stretching in an unbroken sequence from the tropics to mountain tundra. The type of vegetation found in this biosphere reserve can be grouped as 1. Sub-tropical broad leafed forests, 2. Sub tropical pine forest, 3. Temperate broad leafed forests, 4. Temperate conifer, 5. Sub-alpine woody shrub, 6. Alpine meadow( mountain Tundra), 7. Bamboo brakes, 8. Grassland. The habitat in Dihang-Dibang ranges from tropical wet evergreen in the river gorges to subtropical, temperate, alpine and permanent snow.

The reserve is rich in wildlife. Rare mammals such as Mishmi takinred goralmusk deer (at least two sub-species), red pandaAsiatic black bear, occasional tiger and Gongshan muntjac occur, while among birds there are the rare Sclater’s monal and Blyth’s tragopan. Two flying squirrels have been discovered from the vicinity of this reserve. These are named as Mechuka giant flying squirrel (Petaurista mechukaensis and Mishmi Hills giant flying squirrel.


The months between November and April are perfect to plan a trip to Pasighat. The sky remains mostly clear giving the tourists the opportunity to enjoy scenic vistas

Planning a visit to Arunachal Pradesh is not a big deal as you can plan it all the year long. Like the rest of north eastern states, Arunachal Pradesh has a healthy and pleasant climate. The state is home to great monasteries, several shrines and pristine lakes which attract thousands of travelers from different parts of the world. Weather wise, the best time to visit Arunachal Pradesh is from October till April, basically the winter months. he maximum temperature reaches up to 35 degree Celsius in summers. Days are quite hot and tiring as compared to night hours. Though, summer is not really good season to travel to Arunachal Pradesh.

Seasons Months Temprature
Summers March to june 18 °C – 35 °C
Monsoon july to September 12°C – 30°C
Winters November to February 8°C – 20 °C

Things to keep in mind before traveling

  1. Every tourist visiting Arunachal Pradesh needs to obtain an Inner Line Permit and a Protected Area Permit which can be collected from Delhi, Kolkata, Guwahati or Tezpur airports.
  2. The weather in the north-east is pretty unpredictable, so be prepared to have delays due to the bad weather.
  3. Roads that lead to Tawang, especially from Bomdila onwards, aren’t in the best shape.
  4. Locals are friendly and helpful. Be patient as not everyone will know fluent Hindi or English.
  5. Most cell phone networks don’t work well, so inform your family or friends about your whereabouts whenever possible.
  6. Don’t forget to carry some ready to cook food packets or instant noodles if you’re strictly a vegetarian.
  7. Carry extra batteries, power banks and most importantly warm clothing.
  8. Keep at least a couple of extra days in hand in case of any problems like landslides and bad weather on your way.

Day 1: Arrive at Dibrugarh and drive for 4 hrs to Dibang Valley Jungle Camp

Day 2: Morning excursion to Mayodhia pass where you can view snow-capped mountains of Dibang valley, drive to Pasighat via Dambuk . Overnight stay at Abor River Camp

Day 3: Morning short walk to Ponging hanging bridge and afternoon picnic lunch at Siang River. Evening leisure at River Camp

Day4: Drive 3 hrs to Dibrugarh. End